CN102968344A - Method for migration scheduling of multiple virtual machines - Google Patents
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Abstract
The invention relates to a method for migration scheduling of multiple virtual machines. In the migration scheduling process of the multiple virtual machines, a strategy for selecting target host machines migrated by the virtual machines and a strategy for planning the migration sequence of the virtual machines are adopted. The method comprises the following steps of: reading target clustering information divided by the virtual machines; acquiring information of host machines in the system and information of all virtual machines operating on the host machines and calculating the proper mapping of the virtual machines clustered to the target host machines for selecting proper target host machines for the virtual machines; collecting load conditions of the host machines; and arranging the migration sequence of the virtual machines according to the load and the migration mapping and controlling the execution. According to the method disclosed by the invention, the total times and the total time of the migration of the multiple virtual machines are controlled from a system macroscopic aspect, so that the migration efficiency is higher. The algorithm idea in the method disclosed by the invention has certain universality; and meanwhile, the virtual machines are clustered as an input which is separated from the calculation process of the algorithm; and the method has wide applicability.
Description
Technical field
The present invention relates to a kind of dispatching method of multi-dummy machine migration, be mainly concerned with in the multi-dummy machine transition process, the strategy that the target host of virtual machine (vm) migration is selected, and to the strategy that the migration of multi-dummy machine is sequentially planned, belong to virtual and the cloud computing technology field.
Background technology
At present, along with the widespread use of Intel Virtualization Technology in fields such as cloud computings, virtual machine is in a large number operation in server, data center, and the regulatory requirement of virtual machine is highlighted gradually.The regulatory requirement of current virtual machine comprises many aspects.Such as, optimize deploying virtual machine to reduce the power consumption of server; Optimize deploying virtual machine to improve the utilization factor of physical cpu; The virtual machine (vm) migration that the internal memory similarity is large utilizes content-based page technology of sharing (CBPS) to same host, makes a plurality of virtual machines share the host physical memory, to save the host memory source, improves host internal memory service efficiency, etc.More than several Virtual Machine Manager demands, all relate to multi-dummy machine migration.Therefore the transition process of multi-dummy machine has certain expense, and for the migration of the multi-dummy machine under the different situations, the research of various dispatching algorithms becomes the study hotspot in current virtual and cloud computing field.
Present scheduling virtual machine algorithm, have for the load balancing of host and dispatch, also have for the resource utilization situation of host and dispatch, also some dispatching algorithm, the virtual machine that internal memory is similar is placed on same the host by migration, to share the host internal memory.These dispatching algorithms no matter be to adopt static algorithm or dynamic algorithm, all mainly concentrate on solution and " how to finish regulation goal ", do not pay attention to how reducing the expense of multi-dummy machine in transition process.
Along with the large-scale application of cloud computing, in cluster server or data center, the quantity of virtual machine is more and more, and the expense of migration that relates to multi-dummy machine is increasing.If the dispatching method of multi-dummy machine can effectively reduce total migration number of times of multi-dummy machine migration; and in the identical situation of migration number of times; and then reduce total transit time; with directly reducing in the whole system virtual machine total shutdown number of times and stop time, significant for the overall quality of service that improves system.Be exactly the present invention is for multi-dummy machine migration, total propose a kind of dispatching method with reduce system migration number of times and transit time.
Summary of the invention
The objective of the invention is to propose a kind of dispatching method of multi-dummy machine migration, the input of the method is the cluster of virtual machine, the dividing mode of cluster determines (determining by migration the large virtual machine (vm) migration to of an internal memory similarity host such as calculating according to the internal memory similarity) according to specific migration target, the function of method is to be the suitable host of each virtual machine Clustering and selection, and is the suitable migration order of virtual machine design that all need to move.This dispatching method makes the migration total degree of multi-dummy machine as far as possible little, under identical migration time said conditions, makes migration T.T. as far as possible little, from but transition process, the overhead of system reduces, and improves the service quality of system.
According to an aspect of the present invention, provide a kind of dispatching method of multi-dummy machine migration, it is characterized in that comprising:
Step 1. the user inputs the target cluster of multi-dummy machine on master control node machine.The division of target cluster is determined according to the target of multi-dummy machine migration by the user.The virtual machine of same cluster is moved on same the target host the most at last.
Step 2. main controlled node by host node feedback, gets access to the information of whole host nodes in the system by sending request to the host node, and the information of the whole virtual machines that move on the host.
Step 3. according to step 1 and the obtained information of step 2, main controlled node call " target host selection algorithm ", be the suitable target host of virtual machine Clustering and selection, form virtual machine to the migration mapping of target host.
Step 4. main controlled node sends request to the host node, collects the loading condition of each host node.
Step 5. main controlled node, the host load information that the migration mapping of determining according to step 3 and step 4 are collected, according to " migration sequentially determine algorithm ", be multi-dummy machine arrangement migration order, and send instruction, control each relevant host node and carry out in order migration.
Description of drawings
Fig. 1 is the overall system frame diagram of multi-dummy machine migration scheduling method of the present invention.
Fig. 2 is the particular flow sheet of multi-dummy machine migration scheduling method of the present invention.
Fig. 3 is the particular flow sheet of a kind of embodiment of the present invention.
Embodiment
For making the purpose, technical solutions and advantages of the present invention express clearlyer, the present invention is further described in more detail below in conjunction with drawings and the specific embodiments.
Main thought of the present invention is under the condition of given migration target, to be the migration of multi-dummy machine in the system, select suitable target host and arrange suitable migration order, the total migration number of times of preferential reduction system, next reduces total transit time, to improve the overall quality of service of system.This in situation that virtual machine is generally adopted, has very widely using value in the current cloud computing epoch.
Technical scheme of the present invention is as follows:
A kind of dispatching method of multi-dummy machine migration, the overall framework of its system as shown in Figure 1.Wherein the host node has moved a plurality of virtual machines as the machine carrier of virtual machine operation by monitor of virtual machine, is the main place of multi-dummy machine migration.Main controlled node reads the virtual machine target clustering information of user's input as the operation carrier of dispatching method, and obtains the information (comprising the configuration information of host and the information of the virtual machine that moves above it etc.) of each host node.According to these known case, invocation target host selection algorithm is exported the migration strategy of suitable multi-dummy machine, according to this strategy, sends the virtual machine (vm) migration instruction to each host node by control module, controls the multi-dummy machine migration between each node machine.The dispatching method of multi-dummy machine migration is mainly reflected on the main controlled node, and the idiographic flow of dispatching method as shown in Figure 2.The method includes the steps of:
Wherein, the target cluster of the virtual machine of input is provided by the user in the step 201.The user sets the cluster of virtual machine according to the target of virtual machine (vm) migration, and the virtual machine of same cluster is migrated to same host the most at last.This mode has guaranteed the broad applicability of dispatching method of the present invention.The user can come the cluster of partition virtual machines according to different application scenarioss, such as according to the internal memory similarity between virtual machine, and according to the resource operating characteristic of virtual machine, according to the requirement of load balancing, etc.
Wherein, in the step 202, the information that main controlled node is collected to the host node specifically comprises: the various hardware configuration informations of host, the maximum virtual machine quantity of host's function carrying, the system version of whole virtual machines of the current operation of host, CPU configuration, memory size, virtual machine numbering.At the main controlled node end, give each virtual-machine data list item, to fill in above information, and the host numbering also is recorded in the list item, the host numbering of collecting this moment namely is the sourcesink main frame numbering of virtual machine.In main controlled node, can safeguard a record for each host simultaneously.
Wherein, in the step 203, " target host selection algorithm ", be the suitable target host of virtual machine target Clustering and selection, form virtual machine to the migration mapping of target host, this process is divided into 2 and goes on foot.At first, adopt the traversal mode, the mapping solution space from the virtual machine cluster to host, selection makes the set (because may exist a plurality of virtual machine clusters to the mapping mode of host, having identical migration total degree) of the mapping of the total migration least number of times of system.Secondly, in the mapping set of these gross migration least number of times, select the mapping of migration total flow minimum.This is because even identical migration number of times, because the virtual machine of migration is different, flow also can be different.The virtual machine cluster that this step forms has directly determined the target host that the virtual machine in each cluster should be moved to the mapping of host, has namely determined the migration path of whole virtual machines, but does not determine the sequencing of multi-dummy machine migration.
Wherein, in the step 204, collect the loading condition of host, finished by main controlled node.Main controlled node sends request to each host node, behind the usage datas such as separately cpu of each host node feedback, internal memory, virtual machine quantity, is recorded in the corresponding list item by main controlled node.
Wherein, in the step 205, according to the load information that step 204 is collected, the migration mapping that step 203 is calculated is further processed.According to certain principle, arrange the sequencing of multi-dummy machine migration, and send accordingly instruction, control each host node and carry out in order migration.The principle of foundation can be various, preferentially moves into such as foundation minimum load host, and perhaps the maximum load host is preferentially moved out etc.Simultaneously, can also take into account the requirement of network and parallel processing.
3, advantage and effect
The present invention is a kind of method of multi-dummy machine migration scheduling, it compared with prior art has following main advantage and effect: (1) has controlled total degree and the T.T. of multi-dummy machine migration from the angle of system's macroscopic view, make the efficient of migration higher, filled up the blank of association area.(2) because algorithm idea of the present invention has certain universality, simultaneously dispatching method with the virtual machine cluster as input, peel off with the computation process of algorithm, different move targets, the virtual machine cluster that only needs to revise input gets final product, and makes the dispatching method of this method have more widely applicability.Such as the virtual machine (vm) migration that can be used for based on the internal memory similarity, also can be used for the virtual machine (vm) migration based on load balancing, the thought of algorithm even can also be used for the field that routing etc. has surmounted virtual machine (vm) migration.
The hardware device of wanting required for the present invention requires host's function virtual support technology as shown in Figure 1, and requires between the host by network interconnection, can direct communication, do not need through intermediate node.The monitor of virtual machine no requirement (NR), at present popular main product all can, difference only is to revise indivedual function interfaces.For simplifying transition process, preferably requiring host and monitor of virtual machine thereof all is isomorphism.Certainly isomery also can, difference is that transition process can be slightly complicated, this does not relate to core of the present invention.
The below is elaborated with an example.
This example is used dispatching method of the present invention, and concrete steps were divided into for 5 steps, as shown in Figure 3.
It should be noted last that: above embodiment is the unrestricted technical scheme of the present invention in order to explanation only, although with reference to above-described embodiment the present invention is had been described in detail, those of ordinary skill in the art is to be understood that: still can make amendment or be equal to replacement the present invention, and not breaking away from any modification or partial replacement of the spirit and scope of the present invention, it all should be encompassed in the middle of the claim scope of the present invention.
Claims (6)
1. the dispatching method of multi-dummy machine migration is characterized in that comprising:
Step 1. the user inputs the target cluster of multi-dummy machine on master control node machine.The division of target cluster is determined according to the target of multi-dummy machine migration by the user.The virtual machine of same cluster is moved on same the target host the most at last.
Step 2. main controlled node by host node feedback, gets access to the information of whole host nodes in the system by sending request to the host node, and the information of the whole virtual machines that move on the host.
Step 3. according to step 1 and the obtained information of step 2, main controlled node call " target host selection algorithm ", be the suitable target host of virtual machine Clustering and selection, form virtual machine to the migration mapping of target host.
Step 4. main controlled node sends request to the host node, collects the loading condition of each host node.
Step 5. main controlled node, the host load information that the migration mapping of determining according to step 3 and step 4 are collected, according to " migration sequentially determine algorithm ", be multi-dummy machine arrangement migration order, and send instruction, control each relevant host node and carry out in order migration.
2. the dispatching method of a kind of multi-dummy machine migration according to claim 1, it is characterized in that: " user is on master control node machine; the target cluster of input multi-dummy machine " described in the step 1 refers to: the target cluster of the virtual machine of input is provided by the user.The user sets the cluster of virtual machine according to the target of virtual machine (vm) migration, and the virtual machine of same cluster is migrated to same host the most at last.This mode has guaranteed the broad applicability of dispatching method of the present invention.The user can come the cluster of partition virtual machines according to different application scenarioss, such as according to the internal memory similarity between virtual machine, and according to the resource operating characteristic of virtual machine, according to the requirement of load balancing, etc.
3. the dispatching method of a kind of multi-dummy machine migration according to claim 1, it is characterized in that: described in the step 2 " main controlled node is by sending request to the host node; feed back by the host node; get access to the information of whole host nodes in the system; and the information of the whole virtual machines that move on the host " refers to: the information that main controlled node is collected to the host node, specifically comprise: the various hardware configuration informations of host, the maximum virtual machine quantity of host's function carrying, the system version of whole virtual machines of the current operation of host, the CPU configuration, memory size, the virtual machine numbering.At the main controlled node end, give each virtual-machine data list item, to fill in above information, and the host numbering also is recorded in the list item, the host numbering of collecting this moment namely is the sourcesink main frame numbering of virtual machine.In main controlled node, can safeguard a record for each host simultaneously.
4. the dispatching method of a kind of multi-dummy machine migration according to claim 1, it is characterized in that: described in the step 3 " according to step 1 and the obtained information of step 2; main controlled node calls ' target host selection algorithm '; be the suitable target host of virtual machine Clustering and selection; form virtual machine to the migration of target host shine upon " refer to: " target host selection algorithm ", be the suitable target host of virtual machine target Clustering and selection, form virtual machine to the migration mapping of target host, this process is divided into 2 and goes on foot.At first, adopt the traversal mode, the mapping solution space from the virtual machine cluster to host, selection makes the set (because may exist a plurality of virtual machine clusters to the mapping mode of host, having identical migration total degree) of the mapping of the total migration least number of times of system.Secondly, in the mapping set of these gross migration least number of times, select the mapping of migration total flow minimum.This is because even identical migration number of times, because the virtual machine of migration is different, flow also can be different.The virtual machine cluster that this step forms has directly determined the target host that the virtual machine in each cluster should be moved to the mapping of host, has namely determined the migration path of whole virtual machines, but does not determine the sequencing of multi-dummy machine migration.
5. the dispatching method of a kind of multi-dummy machine migration according to claim 1, it is characterized in that: described in the step 4 " main controlled node sends request to the host node; the loading condition of collecting each host node " refers to: collect the loading condition of host, finished by main controlled node.Main controlled node sends request to each host node, behind the usage datas such as separately cpu of each host node feedback, internal memory, virtual machine quantity, is recorded in the corresponding list item by main controlled node.
6. the dispatching method of a kind of multi-dummy machine migration according to claim 1, it is characterized in that: " the main controlled node; the host load information that the migration mapping of determining according to step 3 and step 4 are collected; with " migration determines that sequentially algorithm "; be multi-dummy machine arrangement migration order; and send instruction; control each relevant host node and carry out in order migration " refers to: the load information of collecting according to step 4, the further processing of migration mapping that step 3 is calculated described in the step 5.According to certain principle, arrange the order of multi-dummy machine migration, and send accordingly instruction, control each host node and carry out in order migration.The principle of foundation can be various, preferentially moves into such as foundation minimum load host, and perhaps the maximum load host is preferentially moved out etc.Simultaneously, can also take into account the requirement of network and parallel processing.
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Application publication date: 20130313 |